Double-check your file extension. Sometimes Windows hides extensions, leaving you with a file named sega101.bin.bin , which the emulator won't recognize. Final Thoughts
Check your emulator's documentation.
Which or handheld you are using (e.g., RetroArch, MiSTer, RG35XX) bios sega101bin verified
: If your result matches 85ec9ca47d8f6807718151cbcca8b964 , your file is "verified" and correctly dumped. Double-check your file extension